An obvious volume(s?) missed from LDS filming is 1753 Arch although this is probably not as early as you were asking about. The LDS film number 0106220 ostensibly covers all Arch wills from the beginning of 1750 to the end of 1753.

After being unable to find a particular 1753 will on this film I ordered the next film in the series [0106221] to see whether some of 1753 was on this film – but it started with 1754. Frances thinks that the whole of Arch 1753 volumes 1 and 2 have been omitted from filming, but isn’t 100% certain.

Also not known whether any 1752 wills were omitted from the same film, or any 1754 ones from the next.

I was able to get a copy of the original will from the MM, and Frances has since summarised the 1753 Arch wills.

Sue